DK420289D0 - METHOD OF TREATING LIGNOCELLULOSE PULP - Google Patents
METHOD OF TREATING LIGNOCELLULOSE PULPInfo
- Publication number
- DK420289D0 DK420289D0 DK420289A DK420289A DK420289D0 DK 420289 D0 DK420289 D0 DK 420289D0 DK 420289 A DK420289 A DK 420289A DK 420289 A DK420289 A DK 420289A DK 420289 D0 DK420289 D0 DK 420289D0
- Authority
- DK
- Denmark
- Prior art keywords
- pulp
- lignocellulose pulp
- treating lignocellulose
- reduced
- chlorine
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Dc Digital Transmission (AREA)
- Air Conditioning Control Device (AREA)
- Materials For Medical Uses (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The process comprises treatment of the pulp with an alkaline xylanase at pH values above 7.5 with subsequent treatment of the thus treated pulp with chlorine with a multiple for active chlorine of 0.20 or less in the first chlorination stage. In this manner the necessary time for the enzymatic pretreatment can be reduced, and furthermore the need for the amount of active chlorine in the first chlorination stage is reduced.
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK420289A DK420289D0 (en) | 1989-08-25 | 1989-08-25 | METHOD OF TREATING LIGNOCELLULOSE PULP |
NZ235039A NZ235039A (en) | 1989-08-25 | 1990-08-24 | Treatment of chemical pulp with an alkaline xylanase above ph 7.5, followed by chlorine treatment |
PT95094A PT95094B (en) | 1989-08-25 | 1990-08-24 | PROCESS FOR THE TREATMENT OF POLYMER LIGNOCELLULOSE |
PCT/DK1990/000220 WO1991002839A1 (en) | 1989-08-25 | 1990-08-24 | Process for treatment of lignocellulosic pulp |
EP19900913469 EP0489104B1 (en) | 1989-08-25 | 1990-08-24 | Process for treatment of lignocellulosic pulp |
JP2512595A JPH05500087A (en) | 1989-08-25 | 1990-08-24 | Lignocellulose pulp processing method |
ES90913469T ES2047950T3 (en) | 1989-08-25 | 1990-08-24 | PROCEDURE FOR THE TREATMENT OF LIGNOCELLULOSIC CHEMICAL PASTA. |
DK90913469.4T DK0489104T3 (en) | 1989-08-25 | 1990-08-24 | Method of treating lignocellulosic pulp |
BR909007608A BR9007608A (en) | 1989-08-25 | 1990-08-24 | PROCESS FOR THE TREATMENT OF LIGNOCELLULOSIC CHEMICAL PULP |
AU63584/90A AU635070B2 (en) | 1989-08-25 | 1990-08-24 | Process for treatment of lignocellulosic pulp |
CA002065244A CA2065244A1 (en) | 1989-08-25 | 1990-08-24 | Process for treatment of lignocellulosic pulp |
AT90913469T ATE98713T1 (en) | 1989-08-25 | 1990-08-24 | PROCESS FOR THE MANUFACTURE OF LIGNOCELLULOSIC PULP. |
DE90913469T DE69005308T2 (en) | 1989-08-25 | 1990-08-24 | METHOD FOR PRODUCING LIGNOCELLULOSE PULP. |
FI920798A FI920798A0 (en) | 1989-08-25 | 1992-02-24 | PROCESS FOER BEHANDLING AV LIGNOCELLULOSAMASSA. |
NO920734A NO175948C (en) | 1989-08-25 | 1992-02-24 | Method of treating lignocellulosic pulp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK420289A DK420289D0 (en) | 1989-08-25 | 1989-08-25 | METHOD OF TREATING LIGNOCELLULOSE PULP |
Publications (1)
Publication Number | Publication Date |
---|---|
DK420289D0 true DK420289D0 (en) | 1989-08-25 |
Family
ID=8131254
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK420289A DK420289D0 (en) | 1989-08-25 | 1989-08-25 | METHOD OF TREATING LIGNOCELLULOSE PULP |
DK90913469.4T DK0489104T3 (en) | 1989-08-25 | 1990-08-24 | Method of treating lignocellulosic pulp |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK90913469.4T DK0489104T3 (en) | 1989-08-25 | 1990-08-24 | Method of treating lignocellulosic pulp |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0489104B1 (en) |
JP (1) | JPH05500087A (en) |
AT (1) | ATE98713T1 (en) |
AU (1) | AU635070B2 (en) |
BR (1) | BR9007608A (en) |
CA (1) | CA2065244A1 (en) |
DE (1) | DE69005308T2 (en) |
DK (2) | DK420289D0 (en) |
ES (1) | ES2047950T3 (en) |
FI (1) | FI920798A0 (en) |
NO (1) | NO175948C (en) |
NZ (1) | NZ235039A (en) |
PT (1) | PT95094B (en) |
WO (1) | WO1991002839A1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE465320B (en) * | 1990-01-10 | 1991-08-26 | Korsnaes Ab | PREPARATIONS SUBMITTING ENZYMATIC DELIGNIFICATION ACTIVITY, MADE TO MAKE THE SAME AND APPLICATIONS THEREOF |
GB9018426D0 (en) * | 1990-08-22 | 1990-10-03 | Sandoz Ltd | Improvements in or relating to novel compounds |
DK30991D0 (en) * | 1991-02-22 | 1991-02-22 | Novo Nordisk As | Hitherto UNKNOWN ENZYMS |
NZ239500A (en) * | 1990-08-24 | 1993-08-26 | Novo Nordisk As | Xylanases obtained from bacillus pumilus and use in a lignocellulosic chemical pulping process |
DE4129739A1 (en) * | 1990-09-11 | 1992-03-12 | Sandoz Ag | Chlorine-free bleaching of paper pulp |
CA2106484A1 (en) * | 1991-04-02 | 1992-10-03 | Martin Schulein | Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent |
DK69591D0 (en) * | 1991-04-18 | 1991-04-18 | Novo Nordisk As | NEW MICROORGANISMS |
FI108800B (en) * | 1991-05-07 | 2002-03-28 | Iogen Corp | A method and apparatus for using an enzyme in the manufacture and bleaching of pulp |
DK175391D0 (en) * | 1991-10-18 | 1991-10-18 | Novo Nordisk As | NEW ENZYMER |
CA2082185C (en) * | 1991-11-26 | 2004-01-20 | Alexander R. Pokora | Protease catalyzed treatments of lignocellulose materials |
US5498534A (en) * | 1992-03-25 | 1996-03-12 | The United States Of America As Represented By The Secretary Of Agriculture | Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019 |
US5369024A (en) * | 1992-03-25 | 1994-11-29 | The United States Of America As Represented By The Secretary Of Agriculture | Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps |
GB2279955B (en) | 1993-07-15 | 1998-02-18 | Solvay | Xylanase derived from a Bacillus species, expression vectors for such xylanase and other proteins, host organisms therefor and use thereof |
US7816129B2 (en) | 1994-07-29 | 2010-10-19 | Ab Enzymes Gmbh | Production and secretion of proteins of bacterial origin in filamentous fungi |
US5871730A (en) * | 1994-07-29 | 1999-02-16 | Universite De Sherbrooke | Thermostable xylanase DNA, protein and methods of use |
US5935836A (en) * | 1994-07-29 | 1999-08-10 | Rohm Enzyme Finland Oy | Actinomadura xylanase sequences and methods of use |
US6300114B1 (en) | 1994-07-29 | 2001-10-09 | Rohm Enzyme Finland Oy | Sequences of xylanase and xylanase expression vectors |
DE4439149C2 (en) * | 1994-11-03 | 1997-07-31 | Thueringisches Inst Textil | Process for the preparation of a homogeneous cellulose solution |
US5725732A (en) * | 1994-11-18 | 1998-03-10 | P. H. Glatfelter Company | Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking |
US5770012A (en) * | 1994-11-18 | 1998-06-23 | P. H. Glatfelter Co. | Process for treating paper machine stock containing bleached hardwood pulp with an enzyme mixture to reduce vessel element picking |
US5961735A (en) * | 1995-06-21 | 1999-10-05 | North Carolina State University | Method of cleaning papermaking felts with enzymes |
CA2285244A1 (en) * | 1997-03-31 | 1998-10-08 | David R. Whitmire | Enzyme aided removal of color from wood pulps |
JP4242761B2 (en) | 2001-06-06 | 2009-03-25 | ノボザイムス アクティーゼルスカブ | Endo-β-1,4-glucanase |
DK2224822T3 (en) | 2007-12-06 | 2014-08-25 | Novozymes As | POLYPEPTIDES WITH ACETYLXYLANESTERASE ACTIVITY AND POLYNUCLEOTIDES CODING THESE |
CN107338233A (en) | 2009-09-29 | 2017-11-10 | 诺维信股份有限公司 | Polypeptide with xylanase activity and the polynucleotides for encoding the polypeptide |
CN104694517B (en) | 2009-11-06 | 2019-06-28 | 诺维信股份有限公司 | Polypeptide with xylanase activity and the polynucleotides for encoding the polypeptide |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI81395B (en) * | 1988-03-14 | 1990-06-29 | Cultor Oy | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. |
US5179021A (en) * | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
NZ235679A (en) * | 1989-10-18 | 1993-01-27 | Int Paper Co | Bleaching lignocellulosic pulp using (a) treatment with xylanase and (b) one or more chemical bleaching stages |
-
1989
- 1989-08-25 DK DK420289A patent/DK420289D0/en not_active Application Discontinuation
-
1990
- 1990-08-24 WO PCT/DK1990/000220 patent/WO1991002839A1/en active IP Right Grant
- 1990-08-24 EP EP19900913469 patent/EP0489104B1/en not_active Expired - Lifetime
- 1990-08-24 NZ NZ235039A patent/NZ235039A/en unknown
- 1990-08-24 BR BR909007608A patent/BR9007608A/en not_active Application Discontinuation
- 1990-08-24 JP JP2512595A patent/JPH05500087A/en active Pending
- 1990-08-24 ES ES90913469T patent/ES2047950T3/en not_active Expired - Lifetime
- 1990-08-24 AT AT90913469T patent/ATE98713T1/en not_active IP Right Cessation
- 1990-08-24 DE DE90913469T patent/DE69005308T2/en not_active Expired - Fee Related
- 1990-08-24 AU AU63584/90A patent/AU635070B2/en not_active Ceased
- 1990-08-24 CA CA002065244A patent/CA2065244A1/en not_active Abandoned
- 1990-08-24 PT PT95094A patent/PT95094B/en not_active IP Right Cessation
- 1990-08-24 DK DK90913469.4T patent/DK0489104T3/en active
-
1992
- 1992-02-24 NO NO920734A patent/NO175948C/en unknown
- 1992-02-24 FI FI920798A patent/FI920798A0/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
BR9007608A (en) | 1992-08-25 |
DE69005308D1 (en) | 1994-01-27 |
NO175948C (en) | 1995-01-04 |
CA2065244A1 (en) | 1991-02-26 |
PT95094B (en) | 1997-05-28 |
WO1991002839A1 (en) | 1991-03-07 |
DK0489104T3 (en) | 1994-04-18 |
NO920734L (en) | 1992-02-24 |
AU6358490A (en) | 1991-04-03 |
EP0489104A1 (en) | 1992-06-10 |
NO920734D0 (en) | 1992-02-24 |
DE69005308T2 (en) | 1994-04-28 |
FI920798A0 (en) | 1992-02-24 |
NO175948B (en) | 1994-09-26 |
PT95094A (en) | 1991-04-18 |
ATE98713T1 (en) | 1994-01-15 |
AU635070B2 (en) | 1993-03-11 |
ES2047950T3 (en) | 1994-03-01 |
EP0489104B1 (en) | 1993-12-15 |
JPH05500087A (en) | 1993-01-14 |
NZ235039A (en) | 1991-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AHS | Application shelved for other reasons than non-payment |